We have a 4020 yr. model 2000 with CNC88HS control. On start up the tool changer just continually rotates as soon as it is powered up. I can hit one of the turret jog keys to get it to stop. Any attempt to cold start or jog the axis results in a blown #14 fuse with a resulting fault on x or y axis, depending on which is selected. I have checked all connections and re seated the 1010 cards. Could this be a bad prox switch on turret home?
Any and all help is certainly appreciated.